A reader asks: "Can someone comment on the legality of using my brother's old Snow Leopard DVD to install OS X? My brother has Lion, so why can't he choose to give it to me? It doesn't violate Apple's 1 license per 1 computer policy."

Yeah but there is a problem with the upgrade take.
First for me personally if you can install it on a empty system it is not an upgrade. when you upgrade something you build on the previous generation.

And then there is the practical problems i have gotten mac's delivered without a os. I got them from the university that had some kind of bulk software deal.
Ok
so now i have used mac's whiteout an os where do i buy the full version of OSx to install on these machines.